package org.caowei.samples.Interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.caowei.samples.vo.UserVO;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class SpringMVCInterceptor implements HandlerInterceptor {

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		System.out.println("------------SpringMVCInterceptor.afterCompletion()-------------");
		
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		System.out.println("------------SpringMVCInterceptor.postHandle()-------------");
		
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object arg2) throws Exception {
		HttpSession session = request.getSession();
		UserVO User = (UserVO) session.getAttribute("User");
		if(User != null){
			return true;
		} else{
			response.sendRedirect(request.getContextPath() + "/login");
		}
		System.out.println("------------SpringMVCInterceptor.preHandle()-------------");
		return false;
	}
	

}
